Isinyithi esinesinyithi sihlala sisisiseko kulwakhiwo lwemizi-mveliso yanamhlanje kunye nemveliso. Iingcali ezininzi ngempazamo zicinga ukuba ezi zinto zinamandla zikhuselekile ngokusisigxina ekuthotyweni. Ngokwenyani, iyabola ngokuhamba kwexesha, kodwa ikwenza oku ngoyilo oluthile lobunjineli. Umaleko we-zinc wangaphandle usebenza njenge-anode yombingelelo. Ngokwendalo iyancipha ukukhusela isiseko sekhabhoni yangaphakathi esengozini kwizinto ezibuhlungu zangaphandle.
Kumaqela okuthengwa kweempahla neenkonzo, iinjineli zezakhiwo, kunye nabaphathi beprojekthi, iinguqu eziphambili zovavanyo lweemetriki. Akufunekanga ugxile ekuthinteleni ukuthotywa ngokupheleleyo. Endaweni yoko, kufuneka ubale ngokuthe ngqo ukuba nini kwaye phantsi kweziphi iimeko ezithile izinto eziza kuphelelwa. Uqikelelo oluchanekileyo lukuvumela ukuba uchaze ezona nxalenye zifanelekileyo kumjikelo wobomi beprojekthi ocetyiweyo.
Esi sikhokelo sobugcisa sichitha ixesha elichanekileyo lokuncipha kunye nobuthathaka bendalo. Uya kufunda ukuba iimeko zeatmospheri ezahlukileyo zikhawulezisa njani ukunxitywa kolwakhiwo. Sikwaphonononga izikhokelo zenkcazo eqinisekisiweyo. Ekugqibeleni, olu hlalutyo lusekwe kubungqina lubonelela ngedatha oyidingayo ukwandisa ixesha elide lecandelo kwaye uphephe ukungaphumeleli kwesakhiwo kwangaphambi kwexesha.
Izinto eziphambili zokuThatha
I-Corrosion yisiganeko esicwangcisiweyo: I-coating ye-zinc yenzelwe ukucima ngokuhamba kwexesha; ixesha lokuphila lilingana ngokuthe ngqo nobungqingqwa be-zinc kunye nobundlongondlongo bendalo esingqongileyo.
Iifestile zokusebenza ezikhuselekileyo: Iingubo ezenziwe ngegalvanized zisebenza ngokufanelekileyo kwiindawo ezinepH phakathi kwe-6.0 kunye ne-12.0.
Iimeko-bume ezigqithisileyo zikhawulezisa ukusilela: I-High-chloride (emanzini), entywiliselwe emanzini (anzima vs. Amanzi athambileyo), kunye nangaphantsi komhlaba (umhlaba oneasidi) izicelo zifuna uphononongo olukhethekileyo kunye nokwaleka okwesibini okunokubakho (iinkqubo eziyi-duplex).
Ifomu iyalela ukuba semngciphekweni: Ukuvezwa komphetho okrwada ngexesha lokwenziwa kweshiti lentsimbi ekhandisiweyo okanye uqulunqo lwekhoyili yentsimbi ekhandisiweyo kwazisa imingcipheko yokukhula yendawo efuna ukuncitshiswa.
Isakhelo seDini: Indlela iZinc eLibazisa ngayo ngokuNgxamisekileyo
Sihlala silindele ukuba iingubo zemizi-mveliso zisebenze njengezikhuselo ezingenakungeneka. I-Zinc isebenza nge-electrochemical mechanism eyahlukileyo. Isebenza ngokukodwa njenge-anode yombingelelo. Kuso nasiphi na isibini se-galvanic, intsimbi esebenzayo ngakumbi idla ngokukhetha ukukhusela i-cathode esebenzayo. I-zinc layer yangaphandle inikezela ngokukhululekileyo ubunzima bayo ukukhusela i-carbon core kwi-oxidizing.
Oku kuziphatha kokukhusela kuqhubeka nangona emva kokulimala komatshini kwenzeka. Ukuba umkrwelo onzulu uveza isinyithi esingenanto, i-zinc ejikelezileyo iyaqhubeka nokubonelela ngokhuseleko olusebenzayo lwegalvanic. Ithintela izinto ezonakalisayo. Le ndlela yodwa yecathodic inqanda umhlwa ekurhubuluzeni ngaphantsi kotyatyazo olungagungqiyo, indawo eqhelekileyo yokusilela kwiipeyinti zomqobo osemgangathweni.
Imifuziselo yokuncipha kwemida
Ukuthotywa kwe-zinc akukho nto iphosakeleyo. Ilandela iimodeli eziqikelelweyo zokuncipha komda. Xa ikwiatmosfera yesiqhelo, i-zinc surface idibana neoksijini, amanzi kunye necarbon dioxide. Le mpendulo inzima yenza umaleko oshinyeneyo, onganyibilikiyo we-zinc carbonate. Le nto siyibiza ngokuba yi-zinc patina. Le patina yokwenziwa ihlamba ngesantya esilinganisekayo ngokuhamba kwexesha.
Iinjineli zibala le lahleko ngokusebenzisa idatha enkulu yendalo. Ukuba uvavanyo lokusingqongileyo lubonisa izinga lokuncipha kwendawo ye-micron enye ngonyaka, i-85-micron yokugqoka iya kukhusela ngokucwangcisekileyo isakhiwo iminyaka engama-85. Ungaxela kwangaphambili imida yongenelelo ngokuchanekileyo ngokusebenzisa ezi fomyula zisemgceni kwizinto eziguquguqukayo zomoya othe ngqo wesayithi.
Isiganeko 'somhlwa omhlophe'
Iingcali kufuneka zihlukanise phakathi kwenqanaba lokuqala le-oxidation yomhlaba kunye nokusilela kwetheminali. Uxilongo olungafanelekanga ludla ngokukhokelela ekukhatyweni kwezinto ngokungeyomfuneko.
Umhlwa omhlophe: Oku kubonakala njenge chalky, into emhlophe engumgubo kumphezulu. Imele inqanaba lokuqala le-zinc oxidation, ngokuqhelekileyo ebangelwa kukufuma okubanjwe ngaphandle kokuhamba komoya okwaneleyo. Ilibala logcino kwaye ayifane ibe nefuthe kwimfezeko yesakhiwo ukuba iphathwa ngokukhawuleza.
Umhlwa oBomvu: Oku kubonisa ukungaphumeleli kwesiseko sentsimbi. Ukubonakala kwe-iron oxide emnyama ebomvu okanye emdaka kuthetha ukuba umaleko we-zinc okhuselayo uphelelwe ngokupheleleyo kuloo ndawo ethile yendawo. Kufuneka uphumeze ukulungiswa ngokukhawuleza kwesakhiwo xa kuvela umhlwa obomvu.
Imiyinge yokusiNgqongileyo: Ukuvavanya ukubanakho kweProjekthi
Awukwazi ukusebenzisa Intsimbi yeGalvanized jikelele kuzo zonke imozulu. Izixhobo zisebenza ngokwahlukileyo kakhulu ngokuxhomekeke kwi-atmospheric kunye nekhemikhali. Kufuneka uvavanye iwindow yokusebenza ngokungqongqo phambi kokuchazwa.
I-Atmospheric Exposure (Ilanga, iZakhiwo zangaphandle)
Ukuqulunqwa kwe-atmospheric kuyalela ubomi bezakhiwo zangaphandle ezifana nemitha yelanga kunye neenqaba zothumelo. Iimeko ezingqongileyo zasezidolophini zikholisa ukuba noxinzelelo oluphezulu lwesulphur dioxide ephuma kukukhutshwa kwezithuthi. Imimandla yemizi-mveliso ikhupha izinto ezingcolisa umoya ezintsonkothileyo. Ezi khompawundi zesulfure zixuba kunye nokufuma okujikeleze ukudala iasidi yesulfuric ethambileyo. Le asidi ngokukhawuleza inyibilika i-zinc carbonate patina ekhuselayo. Ngenxa yoko, amazinga okuncipha kwemizi-mveliso ahlala ephinda kabini lawo abonwa kwiindawo ezicocekileyo.
Imimandla yasemaphandleni ibonelela ngomjikelo wobomi omde. Zibonisa ukugxila okungcolisekileyo emoyeni kunye nokufuma okuphakathi. Icandelo elihlala iminyaka engamashumi amathathu kumbindi wedolophu linokuphila ngokulula iminyaka engamashumi asibhozo kwindawo eyomileyo, yasemaphandleni.
Izicelo ezintywiliselwe emanzini (Iimeko zangaphakathi emanzini)
Iintsimbi zokuntywila zazisa izinto eziguquguqukayo zekhemistri yamanzi. Ukusebenza kwe-zinc emanzini kuxhomekeke ngokupheleleyo kwiiminerali ezinyibilikileyo kunye nomxholo wetyuwa.
Ukubonakaliswa kwamanzi anzima: Amanzi anzima aqulethe amanqanaba aphezulu e-calcium kunye ne-magnesium. Ezi zimbiwa zidlula kumphezulu wesinyithi, zenza isikali sokukhusela esingangenekiyo. Esi sikali sinqanda ngokufanelekileyo ukunyibilika kwe-zinc, okukhokelela ekusebenzeni okugqwesileyo kwexesha elide.
Ukutyhileka emanzini athambileyo: Amanzi athambileyo akanazo ezi minerali zokhuseleko. Ngaphandle kokwakheka kwesikali, amanzi athambileyo ahlala enyibilikisa umphezulu we-zinc ngokuhamba kwexesha. Kufuneka ulinganise amazinga okuncipha ngokusondeleyo kwezi meko.
Amanzi anetyuwa noLwandle: Imo engqongileyo yolwandle inobutshaba kwi-zinc. Ukuhlaselwa kwe-chloride ngokukhawuleza kuthintela ukubunjwa kwe-zinc carbonate patina ezinzile. Umaleko uhlala unyibilika kakhulu kwaye uhlambeka ngokukhawuleza. Usetyenziso lwaselwandle lunciphisa kakhulu ubomi becandelo, kufuneke ukuba kuphononongwe ngocoselelo ngokuchasene nealloyi ezomeleleyo ezizezinye.
Uqhagamshelwano oluphantsi komhlaba kunye noMhlaba
Ukungcwatywa komhlaba ngokuthe ngqo kwazisa ezininzi ezahlukeneyo ezifihlakeleyo zokusilela. Ukuxhathisa umhlaba kusebenza njengesalathisi sokuqala sokudleka. Ukuxhathisa okuphezulu kubonisa ukungahambi kakuhle kombane, okukhokelela kumazinga aphantsi e-corrosion. Ukuxhathisa okuphantsi kuthetha ukuba iiyoni zihamba ngokukhululekileyo, zikhawulezisa ukuthotywa.
Isiqulatho sokufuma kunye namanqanaba e-pH enza nzima ngakumbi usetyenziso lwangaphantsi komhlaba. Umhlaba oneasidi kakhulu (pH ngaphantsi kwe-6.0) ngokukhutheleyo uhlubula i-zinc coating. Ukungcwatywa ngokuthe ngqo kwimihlaba enjalo kufuna imigangatho etyebe kakhulu. Kufuneka usebenzise izithintelo ezongezelelweyo, ezinje ngepeyinti enzima ye-bitumastic okanye imikhono ekhethekileyo ye-epoxy, ukuqinisekisa ubomi obude obungaphantsi komhlaba.
Itshathi yokuSetyenziswa kokuNgqongileyo
Ukuhlelwa kwendalo |
I-Arhente eNcincisayo yokuThwalaza |
Ireyithi yokuncipha kweZinc |
Lilindelwe iMpembelelo yoBomi |
I-Atmospheric yasemaphandleni |
I-oxidation eqhelekileyo / ukufuma |
Phantsi |
Ubomi obude obude kakhulu |
I-Industrial Atmospheric |
Sulfur dioxide / imvula Acid |
Phakathi-Phezulu |
Ukunciphisa ubomi obuphakathi |
Ulwandle (Amanzi etyuwa) |
Iikloridi eziphezulu ezifumaneka emoyeni |
Phezulu kakhulu |
Ukunciphisa kakhulu ubomi |
Ukuntywiliselwa (Amanzi Anzima) |
Ubuncinci (Ukwakheka komlinganiselo) |
Phantsi |
Ukusebenza okuzinzileyo, ixesha elide |
Ngaphantsi komhlaba (Umhlaba oneasidi) |
I-pH ephantsi / ukufuma okuphezulu |
Phezulu |
Ifuna umqobo owongezelelweyo |
Iinyani zoKwakha: Ikhoyili yentsimbi eyiGalvanized vs
Ubume bomzimba wemathiriyeli oyithengiweyo iyalela ukuba sichaphazeleke kumonakalo owenziwe kwindawo. Ukuphatha imathiriyeli ekrwada kuphembelela kakhulu ukusebenza kwexesha elide. Kufuneka ulawule ubuthathaka obuthile ngokusekwe kuhlobo lwemeko oyikhethileyo.
Izigqibo zokuThengwa kweeMpahla kunye nemingcipheko yokuGcina
Ujongene nemiceli mngeni eyahlukileyo ngokupheleleyo xa uphethe isambuku Ikhoyili yentsimbi ekhandisiweyo ngokuchasene nokufumana izitaki zentsimbi esekwe ngaphambili. Iikhoyili zonakaliswa ngokuqinileyo phantsi koxinzelelo olukhulu. Ukuba igcinwe ngaphandle ngaphandle kolawulo lwemozulu, isenzo se-capillary sitsala ngokukhawuleza ukufuma kwe-ambient phakathi kweeleya zetsimbi ezipakishwe ngokuqinileyo. Le condensation ebanjiweyo ayinayo i-carbon dioxide exposure, ikhusela ngokupheleleyo ukubunjwa kwe-zinc patina ekhuselayo. Endaweni yoko, umhlwa ondlongondlongo omhlophe udla umphezulu ngaphambi kokuba loo nto ingene kwimveliso.
Amashiti asikiwe kwangaphambili anemingeni eyahlukeneyo. Iibhloko zokupakisha ezingafanelekanga zokungenisa umoya. Kufuneka uzigcine ngaphakathi, ziphakanyiswe ukusuka emhlabeni, uthambekele kancinane ukuqinisekisa ukuthuthwa kwamanzi okwaneleyo.
I 'Sika uMngcipheko' Umngcipheko
Ubuchwephesha bokwenza umgangatho ngokwendalo bubeka esichengeni imiqobo yesinyithi eqhubekayo. Xa ucheba, ubhobhoza, okanye ubhobhoza icandelo le-pre-galvanized, ususa ngobundlobongela umaleko wokukhusela kwindawo yempembelelo. Oku kudala intsimbi ekrwada eveziweyo.
Ngelixa i-zinc ejikelezayo izama ukubonelela ngokhuseleko lwe-cathodic kulo mda osanda kubonakaliswa, ukufikelela kwayo okusebenzayo kulinganiselwe. Indawo emxinwa inokufumana ukukhuselwa kwegalvanic okwaneleyo. Nangona kunjalo, ukucheba okubanzi okanye ukusika kwesakhiwo esinzima kuzisa iivektha zokuthotywa kwangoko. Ngapha koko, imisebenzi ye-welding ikhupha i-zinc ngokupheleleyo kwindawo edibeneyo, iyonakalisa lonke ukhuseleko lwendawo kwaye ifuna ukubuyiselwa okukhulu kwe-post-weld.
Unciphiso kwiMveliso
Iinjineli zixhomekeke kwiiprothokholi zokunciphisa ngokungqongqo ukukhusela iindawo ezenziweyo ezisesichengeni. Ukujongana nemiphetho eqingqiweyo ngokuchanekileyo kuthintela ukusilela kwalapha kwangethuba.
IiCompounds zokuGalvanizing: Amagcisa abrasha okanye atshize iipeyinti ze-zinc ezityebileyo ngokuthe ngqo kwimiphetho esanda kusikwa. Ezi zixhobo ziqulethe uthuli lwe-zinc ukuya kwi-90%. Babuyisela ukhuseleko lwegalvanic olusisiseko kwimigca emincinci yokucheba kunye nokubhoboza imingxuma ngokufanelekileyo.
I-Metallization Touch-Ups: Kwiindawo ezinkulu ezonakalisiweyo, abavelisi basebenzisa ukutshiza kwe-zinc ye-thermal ukuze baphinde bakhe uluhlu olukhuselayo ngokucwangcisiweyo.
I-Post-Fabrication Hot-Dip Galvanizing: Kwiimeko ezingqongileyo ezigqithisileyo, kufuneka uphephe isitokhwe sangaphambili esifakwe igalvanized ngokupheleleyo. Endaweni yoko, yenza yonke into ngentsimbi emnyama ekrwada, uyidibanise, kwaye uyithi nkxu indibano egqityiweyo kwi-zinc etyhidiweyo. Oku kuqinisekisa ukuba yonke imiphetho kunye namalungu afumana ukhuseleko oluphezulu, olungaphazanyiswa.
Uludwe olufutshane olulolunye: Ziya kuchazwa nini iiNkqubo zeDuplex okanye iStainless
Ngelixa iingubo ze-zinc zigqwesa kwiimeko eziphantsi, iindawo ezithile zifuna iindlela zokukhusela eziphakamileyo. Kuya kufuneka uqaphele xa iindlela ezisemgangathweni zifikelela kwimida yazo yobunjineli.
Isicwangciso seNkqubo yeDuplex
Xa iimeko ze-atmospheric zidlula iifestile eziqhelekileyo zokusebenza, sisebenzisa ii-duplex systems. Esi sicwangciso sibandakanya ukusebenzisa ipeyinti ekhethekileyo okanye i-powder coating ngokuthe ngqo kwisiseko se-zinc. Olu luhlu ludala umqobo onamandla we-synergistic.
Umaleko wepeyinti wangaphandle ukhusela i-zinc engaphantsi ekudinweni kokusingqongileyo. Ngembuyekezo, i-zinc engaphantsi inqanda umhlwa ekurhubuluzeni phantsi kwepeyinti ukuba umphandle uyakrweleka. Le ntsebenziswano ye-synergistic yandisa ubomi becandelo elipheleleyo nge-1.5x ukuya kwi-2.5x xa kuthelekiswa nokusebenzisa i-zinc engenanto yodwa. Iingubo zeDuplex zibonisa umgangatho obalaseleyo wezinto ezibonakalayo ezibonakalayo zezakhiwo ezijongene nemozulu yemizi mveliso.
IGalvanized vs. Stainless Steel Decision Matrix
Iinjineli zihlala zivavanya izixhobo ezigqunywe nge-zinc ngokuchasene nezinye izinto eziqinileyo ezingenasici. Sisekela esi sigqibo kwi-matrix engqongqo yokulungelelanisa iimfuno zenkcazo yokuqala ngokuchasene nemijikelo yolondolozo lwexesha elide.
Iialloyi ezingenastainless zisebenzisa ichromium ukwenza umaleko weoksidi okhawulezayo, ozilungisayo. Baxhathisa uhlaselo lwekloridi bhetele kunayo nayiphi na i-zinc coating. Nangona kunjalo, bafuna ulwabiwo olukhulu lwezixhobo zokuqala. Sicacisa i-zinc yokugquma kwiifreyimu ezinkulu zesakhiwo, ucingo, kunye neziseko zohola wendlela apho umthamo omkhulu ufuneka khona. Sigcina iialloyi ezingenasitha kwiziqhoboshi ezichanekileyo, iitanki zokusetyenzwa kweekhemikhali, kunye nezixhobo ezibalulekileyo zaselwandle apho ukuqina okugqithisileyo kodlula ungquzulwano oluchaziweyo.
Ukunciphisa umngcipheko kunye nokulahlwa kwezinto
Kuya kufuneka ulahle i-zinc ngokupheleleyo kwiimeko ezithile ezinomngcipheko ophezulu. Iindawo zokwenziwa kweekhemikhali ezineasidi ephezulu (pH ngaphantsi kwe-5.0) zinyibilikisa i-zinc kumazinga entlekele. Ukuntywiliselwa rhoqo emanzini etyuwa ngaphandle kokhuseleko olongezelelweyo lwe-cathodic kuqinisekisa ukuncipha ngokukhawuleza. Ukuba ukhankanya a Ishiti lesinyithi elifakwe kwi-galvanized kusetyenziso lwexesha elide lolwandle olungaphantsi kolwandle, luya kusilela ngokuqikelelwayo. Kwezi meko zinzima kakhulu, iipolima ezingasebenziyo okanye iintsimbi ezidityanisiweyo ezingashukumiyo zibe zizigunyaziso zobunjineli ezingqongqo.
IMigangatho yokuThotyelwa kunye noQeqesho loMjikelo woBomi
Awukwazi ukusekela ukusebenza kweprojekthi kwiingqikelelo ezibonakalayo. Iingcali zemizi-mveliso zixhomekeke kwizicwangciso-nkqubo zobungakanani obungqongqo ukuqinisekisa unyamezelo lwezinto. Ukuseka ulawulo lomgangatho osisiseko kuqinisekisa ukuba izakhiwo ziyahlangabezana neenjongo ezijoliswe kumjikelo wobomi.
Ukulungelelanisa iNkcazo
Kufuneka unyanzelise ukuthotyelwa okungqongqo kwimigangatho yamazwe ngamazwe ngexesha lokuthenga. Iimpawu ze-ASTM zibonelela ngemigaqo esisiseko yobuninzi be-zinc eyamkelekileyo. Umzekelo, i-ASTM A123 ilawula ubuncinci obamkelekileyo kwibhetshi eshushu-dip iimveliso zesakhiwo. I-ASTM A653 ichaza iimfuno eziqhubekayo zokugquma kwiimathiriyeli ezenziwe ngamaphepha.
Ababoneleli balinganisa obu bunzima bubaluleke kakhulu bokugquma kwii-mil okanye ii-microns. Ukuchaza le milinganiselo ngqo kumaxwebhu okuthenga kuqinisekisa ukhuseleko olusisiseko. Ukhusela ukuziphatha okuqikelelweyo, okusemgangathweni kunokuxhomekeka kwizinto eziguquguqukayo zokwenziwa kwemveliso.
'Ixesha lokuGcinwa kokuQala' (TFM)
Sivavanya ubude bobomi becandelo sisebenzisa 'Ixesha lokuQala uLondolozo' iitshathi. Ezi grafu zomgangatho woshishino zinxibelelanisa ubukhulu obucacileyo be-zinc kunye nokuhlelwa kweatmospheri eyahlukileyo. Iitshathi zibikezela ngokuchanekileyo xa ungenelelo lokukhusela luya kuba luyimfuneko ngokwasemzimbeni ukugcina imfezeko yesakhiwo.
Ngokomzekelo, itshathi ingabonisa ukuba i-85-micron yokugqoka kwindawo yoshishino iya kufikelela kwi-5% ye-rust yomhlaba kwiminyaka engama-35. Lo mnqantsa uyalela ishedyuli yakho yolondolozo. Ukusebenzisa idatha ye-TFM kuvumela amaqela eenjineli ukuba acwangcise ukupeyinta okanye ukungenelela kokugquma kumashumi eminyaka ngaphambili.
UVavanyo lomthengisi
Ukufumana imathiriyeli esemgangathweni kufuna ukuba ugocagoce iindlela zokuphatha umnikezeli wakho. Kuya kufuneka ubuze imibuzo ethe ngqo phambi kokuba wamkele ukuhanjiswa okukhulu ukunqanda ukufumana uluhlu lwempahla olusengozini.
Ngawaphi amanyathelo achanekileyo okulawula imozulu alawula ukufuma kwiindawo zakho zokugcina?
Ngaba uyanikezela ngeengxelo zovavanyo oluqinisekisiweyo lokusila eziqinisekisa ubungqingqwa be-micron obuchanekileyo bomaleko we-zinc?
Uqinisekisa njani ukuba uyalandeleka ngokupheleleyo ukusuka kwindawo yokusila ukuya kumgangatho wethu wokwenziwa?
Zeziphi iindlela zokungenisa umoya ozisebenzisayo xa uthutha iikhoyili ezipakishwe ngokuxineneyo kumgama omde?
Ukuqukumbela
Amacandelo enziwe ngegalvanized amele esinye sezona zisombululo zithembekileyo nezivavanyiweyo ezinganyangekiyo ekumdleni ezikhoyo namhlanje. Basebenzisa indlela yokubingelela eqaqambileyo ethi ikhusele iziseko ezingundoqo ezibalulekileyo. Nangona kunjalo, olu khuseleko luhlala lufanelekile kuphela xa uhlonipha iifestile ezithile zokusebenza kokusingqongileyo.
Kuya kufuneka utshintshe ukusuka ekubuzeni ukuba ingaba impahla iya kuthomalalisa ekubaleni indlela echanekileyo yokuncipha kwayo. Qala ngokwenza uhlalutyo lwendawo yendawo. Linganisa amanqanaba e-pH ye-ambient, jonga isiqulatho sokunyakama komhlaba, kwaye uvavanye iikloridi ezihamba emoyeni. Qonda ukuba imveliso eyenziwe ngoxinizelelo efana nemiphetho esikiweyo ifuna njani unciphiso olukhethekileyo lwasemva kweweld. Okokugqibela, jonga ngokuthe ngqo ukucaciswa kwemveliso ecaleni komboneleli wakho okanye i-metallurgist eqinisekisiweyo ukuba iqinisekise ubomi obude ngaphambi kokugunyazisa iiodolo zezinto ezininzi.
FAQ
Umbuzo: Kuthatha ixesha elingakanani ukuba intsimbi efakwe amazimba ibe ngumhlwa ngaphandle?
A: Ubomi buxhomekeke ngokupheleleyo kwimo engqongileyo. Kwiindawo ezisemaphandleni ezinobunzima obunomswakama ongathathi hlangothi, i-coating ye-zinc eqhelekileyo ingahlala iminyaka engama-70 ukuya kwe-100 ngaphambi kokuba kugcinwe ukugcinwa. Kwiimeko ezirhabaxa zemizi-mveliso ezivezwe kakhulu kwi-sulphur dioxide, kwaezo zogqumo zisenokuqalisa ukubonisa umhlwa obomvu kwiminyaka engama-20 ukuya kuma-40.
Umbuzo: Ngaba unokunqanda umhlwa omhlophe ukuba wenze kwizinto ezigciniweyo?
A: Ewe. Umhlwa omhlophe wenzeka xa ukufuma okubanjiweyo kusabela ngokuqhubekayo kunye ne-zinc layer. Uyayinqanda ngokuqinisekisa ukungena komoya ngamandla kunye nokugcina indawo yokugcina eyomileyo. Gcina iikhoyili kunye namashiti ziphakanyisiwe ukusuka emhlabeni. Soloko ucofa amashiti apakishiweyo kancinane ukuvumela ingxinano iphume ngokukhululekileyo.
Umbuzo: Ingaba intsimbi efakwe igalvanized ikhuselekile ukuba ingasetyenziswa phantsi komhlaba?
IMPENDULO: Ikhuselekile ukuba ihlolwe kakuhle, kodwa impumelelo ixhomekeke kakhulu kwiimeko ezithile zomhlaba. Imihlaba eneasidi, ukugcinwa kokufuma okuphezulu, kunye nokuxhathisa kombane okuphantsi kuhlasela ngamandla i-zinc. Kufuneka wenze uvavanyo olubanzi lomhlaba phambi kokuba ungcwatywe ngokuthe ngqo. Uninzi lwezicelo eziphantsi komhlaba zifuna i-zinc ejiyileyo yokugquma okanye iipeyinti ezikhethekileyo zesithintelo se-bitumastic.
Umbuzo: Ngaba amanzi anetyuwa atshabalalisa iingubo ezifakwe igalvanized?
A: Ewe. Amanzi etyuwa aqulethe i-chlorides ephezulu. Ezi kloridi zaphula ngamandla i-zinc carbonate patina ekhuselayo. Ngelixa izinto ezigqunyiweyo ziyakwazi ukunyamezela isitshizi solwandle esikhanyayo ngamaxesha athile, ukuntywiliselwa emanzini okuqhubekayo kukhawulezisa ukuncipha komgangatho. Sicebisa ngamandla iinkqubo ezomeleleyo ze-duplex okanye ezinye iindlela ze-alloy ezingenasici zokuvezwa rhoqo elwandle.
